Storage-battery-filling vent



C. W. HAZELETT.

swam BATTERY FILLING va m.

APPLICATION HLED FEB. 20. l9l8.

Patented Sept. 16, 1919.

. INVENTOR. C. W. HAZELE'I'T ATTORNEY 1Q! COLUIIIA PLAHOOIAPM cm. WASHINGTON. D. C.

soft to permit this.

UNITED STATES "PATENT OFFICE. Z

CLARENCE W. HAZELETT, OF LAKEWOOD, OHIO, ASSIGNOR TO NATIONAL CARBON COMPANY, INC., A CORPORATION OF NEW YORK.

STORAGE- BATTERY-FILLING VENT.

Specification of Letters Patent.

Patented Sept. 16, 1919.

Application filed February 20, 1918. Serial No. 218,366.

To all whom it may concern Be it known that I, CLARENCE W. HAZE- Ln'rna citizen of the United States, residing at Lakewood, in the county of Guyahoga and State of Ohio, have invented a certain new and useful Improvement in Storage-Battery-Filling Vents, of which the following is a full, clear, and exactdescript10n.

This invention relate to electric batterice and is a continuation of m application filed September 23, 1916, erial No. 121,720.

It is common practice to incase. storage battery elements in rubber jars and to inclose the top with an appropriate cover such as hard rubber which usually is sealed in with pitch or bituminous material. It is necessary to add electrolyte or water to the cell, from time to time, and therefore a re movable stopper or closure is provided which usually consists of a vent plug threaded into the cover. It is considerable trouble to thread and unthread the removable vent plug, as a number of revolutions are necessary to complete the operation. Also the threads are liable to be jammed or stripped by careless insertion of the plug. That is, if the plug is not held exactly central with the threaded hole it will screw into the cover with the threads crossed and not in perfect mesh, because the material of the cover and plug are sufliciently My invention aims to overcome these and other difficulties.

Referring to the drawings:

Figure 1 is a sectional elevation of a battery containing my improved vent plug.

Fig. 2 is a bottom view of a section of the cover shown in Fig. 1, with the vent plug in closed position.

Fig. 3 is an elevation of the ortion of the cover shown in Fig. 2, looking in the direction of arrow B.

Fig. 4 is an elevation of the portion of the cover shown in Fig. 2, looking in the direction of arrow A.

Fig. 5 is an elevation of the vent plug taken in the direction of arrow B of Fig. 2.

In the drawings the usual jar 1 is shown inclosing the component parts of the cell with which the cover 2 cooperates to retain the parts in position. The specific form of the (:"over is not of importance as far as this invention is concerned, and only the part cooperating with the vent plug is shown in Figs. 2 and 3. In these figures the cover 2 has arcuate cam surfaces 3 and 4 on the underside, which cooperate with arms 5 and 6 on a vent plug 8 to close the filling opening 8 in the cover 2.

The vent plug has wings 9 and 10 preferably arranged in parallel direction with the arms 5 and 6, to permit ready insertion of the plug through the hole 8 which is provided with slots 11 and .12 to receive the arms 5 and '6 which preferably have cam surfaces fitting the cam surfaces 3 and 4. The slots 11 and 12 are located at the foot of-the arcuate cam surfaces 3 and 4 so that, when the plug is inserted through a washer 13 of soft rubber or other appropriate material, and the cover 2, a turning movement will cause the arms 5 and 6 to ride up cams 3 and 4 substantially onto the surfaces 14, 15, against the abutments 16, 17 which prevent further movement in that direction. Due to the action of the arms of the plug on the cam surfaces, elastic washer 13 is compressed to form a tight seal which prevents the escape of electrolyte.

The vent plug has a hole 18 extending from the bottom to a point adjacent the top of the plug where it branches into one or more channels 19 leading to the exterior of the plug at an angle to the hole 18. These channels permit the escape of gas from the interior of the cell which is necessary to prevent the disrupting of the container by pressure of accumulating gases.

With my improvement it is not necessary to use care in inserting or removing the vent plug, as there are no threads to jam and it is impossible to perform an incorrect manipulation. Since the Wings 9 and 10 are in line with the arms on the bottom of the plug, the insertion of the plug throu h the cover can be readily made, and a quic turn in a clockwise direction accomplishes the removal in the same expeditious manner. The abutments 16 and 17 on the cover extend to the slots 12 and 11 respectively, which prevents the plug being rotated in the wrong direction when attempting to seat it in position in the cover.

Having described my invention, what I claim is:

1. In storage batteries, a cover having a filling opening, a slot joining said opening, an arcuate cam surface commencing at said slot and inclining away from said cover, a plug adapted to pass through said slot and having'an arm adapted to ride-upsaidcam surface during the rotation ofthe plug in said opening, and means on saidp ug adapted to be forced against the cover by the action of the arm on,saidca1n,.

2; Iii-storage batteries, 3, cover having a filling opening, a slot joining-said opening,

an arcuate cam surface beneath the cover commencing at: Said! slot: and; inclining: away from-the cover said 0am: terminating in, ineans to holdi the said; plug; against-r:furthen rotative. movement,

3; In; storage batteries, a; cover: having a; filling opening, said openingrconsisting[ofa cinculan portion anda slot havingrsidesren tending from the oir'eular portion,- a thicha ened cam portion 1 projecting from 1 the under; surface of the coven and? extending fronrone side of the slot radially around the oinculan portion of the; opening, a fiangedi plug, adapted to be inserted in; the: opening; ana elastic washer between the flange of the plug: and {the cover, and'an arm; on saidiplug. adapted toiride up thecam onto sasidisurface tov compress: the elastic washer "and seal; the battery.

L 1111 storage batteries, covecchaving aa filling: opening,- said opening-1 consisting of" a central portion. and; a pain of? oppositely disposed slots: extending-1 from the central! poi-tion,- a pain Of thickened cam BEST Avarrneee eoev filling opening; saidl opening consisting of circular portion and pair of oppositely disposed slots extending fromthe circular portion, a.- pairw of thickened cam: portions projecting fronr the; lower surface of. said Coven ancb extending: radially around" the portions of the circular opening between the slotsgva flanged plug adapted tobe inserted in said opening, anl elastic w'asher: between the flangeof the plug and said cover, arms on said plug adapted to pass through the slotsaands to ride: up the cams ontothe sur facesz-totcompressathe elastic' washer againstthe cover; abutments ad acent sald surfaces" tog-prevent further rotativ'e movement of: the plug. andtzmeans toprevent the arms from being firotatc'd away fromsaid earns when inline withsaidz slots;

In testimonyvvvhereof, I hereunto my signature.

\ o. W. HAZELETl- Copies; .01 this pa teirtfmjay :bew obtaingdlfon-five: cents eacln byi addressing the flommissrcner' of: Patents; Waahington Its 03- 

